<template>
	<view class="vcode-input-body">
		<text class="vcode-input-item" :class="isBorderLine?'vcode-input-line':'vcode-input-border'"
			v-for="(v,index) in sum" :key="index" @tap.stop="setFocus" :style="{
			borderColor:text.length===index&&focus?borderActiveColor:(text.length>index?borderValueColor:borderColor),
			color:text.length>index?borderValueColor:borderColor
		}">{{text[index]}}</text>
		<view class="hidden-input">
			<input type="number" :show-confirm-bar="false" auto-blur :cursor="99" :focus="focus" :maxlength="sum"
				v-model="value" @blur="setBlur" @focus="setFocus" :password="isPassword" placeholder="验证码" />
		</view>
	</view>
</template>

<script>
	/**
	 * vcode-input 验证码输入框
	 * @description 验证码输入框。
	 * @property {Boolean}			autofocus			自动获取焦点
	 * @property {Number}			sum					验证码长度
	 * @property {Boolean}			isBorderLine		显示的输入框的样式
	 * @property {String}			borderColor			输入框未输入边框颜色
	 * @property {String}			borderValueColor	输入框已输入边框颜色
	 * @property {String}			borderActiveColor	输入框选中边框颜色
	 * @property {Boolean}			isAutoComplete		当输入长度达到sum规定时才回调
	 * @property {Boolean}			isPassword			是否为密文输入
	 * @example <vcode-input ref="VcodeInput" @vcodeInput="vcodeInput"></vcode-input>
	 */
	export default {
		name: 'vcode-input',
		props: {
			autofocus: {
				type: Boolean,
				default: true
			},
			sum: {
				type: Number,
				default: 6
			},
			isBorderLine: {
				type: Boolean,
				default: false
			},
			borderColor: {
				type: String,
				default: '#DADADA'
			},
			borderValueColor: {
				type: String,
				default: '#ffffff'
			},
			borderActiveColor: {
				type: String,
				default: '#FF6B00'
			},
			isAutoComplete: {
				type: Boolean,
				default: true
			},
			isPassword: {
				type: Boolean,
				default: false
			}
		},
		data() {
			return {
				focus: false,
				text: [],
				value: '',
			};
		},
		watch: {
			value(value, oldVal) {
				if (this.isAutoComplete) {
					if (value.length >= this.sum) {
						// this.setBlur();
						this.$emit('vcodeInput', value);
					}
				} else {
					this.$emit('vcodeInput', value);
				}
				if (this.isPassword) {
					let val = '';
					for (let i = 0; i < value.length; i++) {
						val += '●';
					}
					this.text = val;
				} else {
					if (value) {
						this.text = value.split("");
					} else {
						this.text = [];
					}
				}
			}
		},
		mounted() {
			this.$nextTick(() => {
				this.initInput()
			})
		},
		methods: {
			initInput() {
				// #ifndef MP-WEIXIN
				if (this.autofocus)
					this.focus = true;
				// #endif
			},
			setBlur() {
				uni.hideKeyboard();
				this.$nextTick(() => {
					this.focus = false;
				})
			},
			setFocus() {
				this.focus = true;
			},
			clearValue() {
				this.setBlur();
				this.value = '';
				this.text = [];
				this.$forceUpdate();
			}
		}
	}
</script>

<style lang="scss">
	.vcode-input-body {
		margin-left: -36rpx;
		margin-right: -36rpx;
		position: relative;
		overflow: hidden;
		/* #ifndef APP-NVUE */
		display: flex;
		/* #endif */
		flex-direction: row;
		justify-content: center;
		align-items: center;
	}

	.vcode-input-item {
		background: linear-gradient(90deg, rgba(234, 134, 189, 0.3) 0%, rgba(162, 112, 248, 0.3) 100%);
		border-radius: 16rpx;
		width: 101rpx;
		height: 101rpx;
		margin-left: 12rpx;
		margin-right: 12rpx;
		line-height: 101rpx;
		text-align: center;
		font-weight: 500;
		font-size: 36rpx;
	}

	.vcode-input-border {
		// border-style: solid;
		// border-width: 2rpx;
		// border-color: $uni-border-color;
		// border-radius: 4rpx;
	}

	.vcode-input-line {
		border-bottom-style: solid;
		border-bottom-width: 2rpx;
		border-color: $uni-border-color;
	}

	.hidden-input {
		width: 1px;
		height: 1px;
		position: absolute;
		left: -1px;
		top: -1px;
		overflow: hidden;
	}
</style>
